Fix the condition for displaying edit/delete links

app/models/asciicast.rb

@@ -57,4 +57,12 @@ class Asciicast < ActiveRecord::Base
     terminal.release if terminal
   end
 
+  def managable_by?(user)
+    if user
+      user == self.user
+    else
+      false
+    end
+  end
+
 end

app/views/asciicasts/show.html.slim

@@ -33,7 +33,7 @@
               = " #{@asciicast.views_count}"
 
         .col-md-4
-          - if @asciicast.user == current_user
+          - if @asciicast.managable_by?(current_user)
             .dropdown.actions-dropdown.pull-right
               button.btn.btn-default.dropdown-toggle[type="button" data-toggle="dropdown"]
                 span.glyphicon.glyphicon-cog

spec/models/asciicast_spec.rb

@@ -82,4 +82,35 @@ describe Asciicast do
     end
   end
 
+  describe '#managable_by?' do
+    subject { asciicast.managable_by?(user) }
+
+    let(:asciicast) { Asciicast.new }
+    let(:owner) { nil }
+
+    before do
+      asciicast.user = owner
+    end
+
+    context "when user is nil" do
+      let(:user) { nil }
+
+      it { should be(false) }
+    end
+
+    context "when user is owner of the asciicast" do
+      let(:user) { User.new }
+      let(:owner) { user }
+
+      it { should be(true) }
+    end
+
+    context "when user isn't owner of the asciicast" do
+      let(:user) { User.new }
+      let(:owner) { User.new }
+
+      it { should be(false) }
+    end
+  end
+
 end